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thermocouples

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Image
Published: 01 June 2019
Fig. 1 Drawing of the CIM showing location of thermocouples and hole in drain tube More
Image
Published: 01 December 1992
Fig. 4 Location of thermocouples on the selected glass panel. + Outer thermocouple, −Inner thermocouple, Not shown: One thermocouple in air space, One thermocouple on concrete, One ambient thermocouple More
Image
Published: 01 June 2019
Fig. 14 The crack from the airside after removal of the thermocouple pads and light polishing, showing its length and the pits from spot welds More
Image
Published: 01 January 2002
Fig. 37 Steamside oxide scale buildup thickness versus thermocouple measurements for a 2 1 4 Cr-1Mo tube compared to predicted values using a code More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001632
EISBN: 978-1-62708-234-1
... temperature cycles calculated to be from 400 to 30 deg C (752 to 86 deg F). The window was activated to >200 Sv/h. It was determined through analysis using remote handling techniques and hot cells that the crack initiated near a spot weld used to affix thermocouples to the window surface. In addition...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001340
EISBN: 978-1-62708-215-0
... of overheating and thermal fatigue. It was recommended that recent alterations to the steam-drum baffling be remodified to improve circulation in the boiler and prevent further overheating. Several thermocouples were attached to tubes in problem areas of the boiler to monitor the effects of the steam-drum...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001363
EISBN: 978-1-62708-215-0
... by excessive heating, causing cage disintegration, plastic flow of the races and balls, and eventual separation of inner and outer races. It was recommended that the bearing set be resized to accommodate the large thrust as and that a thermocouple be added to monitor the condition of the bearing during testing...
Image
Published: 01 June 2019
Fig. 2 Outer face (atmosphere side) of the LANSCE double-walled hemispherical beam exit window showing placement of the thermocouples. Note that several spot welds were used to affix the thermocouple pads to the window surface. More
Image
Published: 01 June 2019
Fig. 1 Type 304 stainless steel tee fitting that failed by low-cycle thermal fatigue. Top: original design. Inset shows the locations of thermocouples used in analyzing thermal gradients and the typical temperatures at each thermocouple location. Bottom: the analysis resulted in an improved More
Image
Published: 01 January 2002
Fig. 32 Type 304 stainless steel tee fitting that failed by low-cycle thermal fatigue. Top: original design. Inset shows the locations of thermocouples used in analyzing thermal gradients and the typical temperatures at each thermocouple location. Bottom: the analysis resulted in an improved More
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001126
EISBN: 978-1-62708-214-3
... to be approximately 0.75 MPa m (0.68ksi in . ). Stress Analysis Experimental Thermal stresses were considered as a possible cause of glass breakage. An original glass panel was instrumented with thermocouples to determine the variation in temperature across and through the glass face...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001326
EISBN: 978-1-62708-215-0
... components Pinhole Thermocouples 316L UNS S31603 (Other, general, or unspecified) corrosion Background A batch of AISI type 316L stainless steel thermowells ( Fig. 1 ) was procured for a nuclear power plant to house thermocouples at 612 locations. Pressure testing revealed that about 20...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0048361
EISBN: 978-1-62708-234-1
... that failed by low-cycle thermal fatigue. Top: original design. Inset shows the locations of thermocouples used in analyzing thermal gradients and the typical temperatures at each thermocouple location. Bottom: the analysis resulted in an improved design. Dimensions given in inches Investigation...
Image
Published: 30 August 2021
Fig. 28 (a) Photograph of fourth-stage turbine blades prior to removal. The first blade to fail is indicated with an arrow; an exhaust thermocouple is shown in the foreground. (b) Photograph of blade fracture surface after sectioning. Note the blue discoloration at the trailing edge. (c More
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001274
EISBN: 978-1-62708-215-0
..., the time required for the water to begin boiling was recorded for each cup position. The experiment was repeated four times for each of the three ovens. All test results were within experimental accuracy. To measure and verify the cooking temperatures of microwaveable dinners, sheathed-thermocouple...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001599
EISBN: 978-1-62708-236-5
.... The melter temperature was controlled by power input, and melt pool temperatures were periodically measured using a Type B, 304L stainless steel sheathed dip thermocouple. A melt pool temperature in excess of 1500 °C was measured prior to the thermocouple failure. Upon disassembly of the melter, severe...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001106
EISBN: 978-1-62708-214-3
... by bending sheet and welding the seams. Furnace temperatures range from 900 to 700 °C (1650 to 1290 °F), with the metal being cast at 710 °C (1310 °F). Some scrap remelting and fluxing operations are also carried out. The heaters are linked to thermocouples placed in the molten aluminum bath...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001609
EISBN: 978-1-62708-229-7
.... In the field, joints were wrapped with electrical resistance strip heaters and insulation. Temperature monitoring and control was by direct attachment of thermocouples and multiple channel controllers and chart recorders. The extra heat sink caused by the tube fins and the internal venting of heat due...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001149
EISBN: 978-1-62708-232-7
... of the newness of the system By the time that insulation was placed atop the duct in early March to try to reduce arching, the highest duct wall temperature reading obtained from the thermocouples in the upper section of the duct was 205°C (400°F). With the insulation on, the furnace had been operated...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001814
EISBN: 978-1-62708-241-9
... of the incident. The quench chamber temperature was measured by one thermocouple, located in the upper part of the chamber outside the draft tube. Gasifier History and Modifications The syngas temperature exiting the combustion chamber is too high for long-term service of the metal dip tube without cooling...